Refrigeration system.



No. 677,845. Patented July 2, I90]. 0. .1. COLEMAN.

REFRIGERATION SYSTEM.

(No Model.)

16M .2 MM

NITED] STATES PATENT OFFICE.

cLYDE J. COLEMAN,

'oF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE :AS'SIGN- MENTS, TO CLARENCE W. COLEMAN, OF SA ME "PLACE.

r REFRIGERATION SYSTEM."

srncmxca'rron forming part er Letters iatent No. 677,845, dated July 2, 1901. V Appllccticu filed January 12, 1900. Serial 150.13.99- (lio model.) 7

To all whom it may concern;

Be it known that I, CLYDE'J. COLEMAN, a citizen of the United States-of America,"aud a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Refrigeration Systems, of which the following is aspecification. I

The present invention relates to certain improvements in the type of refrigeration systems which constitute the subject-matter of my prior application" for Letters Patent, Serial No. 733,689, filed October 19, 1899, and in which the refrigerant medium is positively transferred from the expansion or cooling chamber into the condensing orstorage chamber to attain a continued and-automatic operation of the system.

The object-of the present improvement is. to provide a simple and eflicient refrigeration apparatus in which'the different operations of the system are carried on in succeeding cycles and automatically controlled'to maintain a predetermined temperature in the coolthe cooling-chamber is in turn connected 10'- the inlet end of the compression apparatus ing-chamber, all as will hereinafter more fully.

with a gaseous-fuel supply-pipe and burner appear and be more particularly pointed out in the claims.--

The accompanying drawing, illustrative of thepresent invention, is an elevation, partly in section, of an apparatus embodying thepresent improvements. x

Referring to the drawing, as inJm'y afore-' said application for Letters Patent, *1- represents the storage-chamber'yiz, the cooling-j chamber; 3,.the expansion-valvaand 4 the; compression apparatus, by means of which the expanded refrigerant medium is drawn; from the cooling-chamber and forced into the storage-chamber.

In the construction shown. he outlet'endf of the pumping-engine or injector-4 is con" nected to the storage jchamberiby'a pipe con nection 5, provided with a check-valvefi'tc prevent a return flow of the refrigerant from the storage-chamber. The storage-chamber is in turn connected to the cooling chamber 2 by a. pipe pansion-valve 3, heretofore described, and

therefrom.

Fr :tafiifllQ-the motive gaseous-pressure fluid connection 7, in whichjis the ex'- by th return-pipeconneotion .3 provide with a check-valve 9 to prevent a back flow of the refrigerant into the cooling-chamber.

' The system illustrated'in-the drawing-involves the use of, the same fluid medium in common in both the refrigerating or cooling portion and in 'the thermally-actuated por-' tion of the system and comprises the following arrangement of parts:.

10 isan injector or et-pump receiving its supply of actn atin g fluid, preferably mercury,

from an elevated tank 11, its inlet or suction end being connected by pipe connection 8 with the cooling-chamber 2 .and adapted to exhaust the expanded refrigerant medium 12 is a closed receiving tank or chamber, intowhich'the eduction-pipe 13 of the pump or injector 10 discharges the motive liquid, leaving the refrigerant medium in the upper portion of such chamber in a compressed con ,d itionand from whence it passes through pipe connection 5 into the storage-chamber 1 for reuse; r

14 is a thermal-pressure generator provided 15,'the supply of fuel-gas theretobe'ing regulated and controlled, as in my aforesaid prior application, by an electromagnetic controlling-valve 16 and a thermostat 17, located unvdcr the influence of the generator 14 and close the electromotive adapted to open or icircuit of the operatIng-eleetromagnet of the valve 16 to regulate the supply of fuel-gas in accordance with the variations of 'tempera-' E'tdre within the generator. 1 v 318 is an injector or ,other similar type of pufiping engme receiving its supply of actus ing gaseous pressure from the thermal genv -ratdr 14 through pipe connection 19, its inlet cr suction end being connected with the te -liftthe motive-power fluid of the main actor'or pump 10 from the tank 12, through connection 20, into the elevated supplygem fleeting in the upper end of the chamber 11 cwe'r 'end of the receiving-tank 12 and'adapt- IOO ner and by any suitable automatic means, as

fully set forth in my aforesaid prior application.

is a check-valve in the pipe connection between the auxiliary storagechamber and the tank 24 to prevent a return flow from such tank into the auxiliary storage-chamber.

,The present improvement involves the operation of a refrigeration system and apparatus so as to maintain a maximum and con-' tinuous coollngelfect and in connection therewith to provide means for regulating the temperature of the cooling-chamber by an automatically-controlled admission of a heated fluid o'rgaseous medium or by radiation, the object being to provide a very simple and durable apparatus in which are but very few complex parts liable to become deranged in continued use. In the construction shown in the drawing as illustrative of this part of the present invention, 26 is aradiator-coil arranged within the cooling-chamber 2 and having communication with'the thermal generator 14 by pipe connection 27.

28 is an electromagnetic controlling-valve in the pipe connection 27, and 29 is a thermostat located under the influence of the cooling-chamber 2 and adapted to open or close the electromotive circuit of the operat- 1 ing-electromagnet of the valve 28 to automatically regulate the admission of heated fluid into the interior of the cooling-chamber to preserve a uniform and predetermined degree of temperature in such cooling-chamber.

In the operation of the present apparatus the expanded refrigerant medium is drawn from the expansion-chamber 2 by the injector 10 and compressed into the upper part of the 7 receiving or separating chamber 12, fromwhich it passes through pipe connection 5 to the storage-chamber 1 to be again expanded in the expansion-chamber 2 in the continued operation of the apparatus.

, Having thus fullydescribed my said invention, what I claim as new, and desire to secure by Letters Patent, is- 1 1. In a refrigeration system of the class herein described, and in which the admission of the expanding fluid to the cooling-chamber is substantially uniform and continuous, the combination with the storage-chamber and the cooling-chamber, of means for admitting thermal agency to the cooling-chamber without interruption in the admission of the cool- =ing fluid to such chamber, substantially as set'forth.

-2. In a refrigeration system of the class herein described, and in which the admission cooling elfect operates continuously, the com bination with the storage-chamber and the cooling-chamber, of means for admitting thermal agency to the cooling-chamber, thesame comprising a heating-coil-arranged in the lower portion of the cooling-chamber, substantially as set forth. l r

at. In a refrigeration system in which the cooling'effect operates continuously, the combination with the storage-chamber and the cooling-chamber, of'means for admitting thermal agency to the cooling-chamber the same. comprising a heating-coil arranged in. the

lower portion of the cooling-chamber, and means connected to the cooling-chamber for automatically controlling the admission of such thermal agency, substantially as set forth.

5. In a refrigeration system of the class herein described and in which the admission of the expanding fluid to the cooling-chamber is substantially uniform and continuous, the combination with the storage-chamber and thecooling-chamber, of an injector arranged intermediate of said chambers, means for admittingathermal agency to the cooling-cham her, and means for automaticallycontrolling the admission of such thermal agency, substantially as set forth.

6. In a refrigeration system of the class herein described and in which the admission of the expanding fluid to the cooling-chamber is substantially uniform and continuous, the combination with the storage-chamber and the cooling-chamber, of an injector arranged intermediate of said chambers, means for admitting a thermal agency to the cooling-chamber, and means connected with the coolingchamber for automatically controlling the admission of such thermal agency,,substantially as set forth.

7. In a refrigeration system of the class herein described and in which the admission of the expanding fluid to the cooling-chamber is substantially uniform and continuous, the combination with the storage-chamber and the cooling-chamber, of an injector arranged intermediate of said chambers, means for admitting a thermal agency to the cooling-chamber, the same comprising a heating-coil arranged in the lower portion of the coolingchamber, and means for automatically controlling the admission of such thermal agency, substantially as set forth.

IIO

8. In a refrigeration system of the class herein described and in which the admission I I of the o'x pzind i ng fluid bathe Gobliii-hfihxher I 5 intermediate of sgidfchauibers nie'ansfim: j mitting a'. thermal-agenoy'to the 'cooling-ch'amber' the" same: comprising a heating-coil .a. r

is substantially" uniform 'and'ioopt innofi's, the Y combination with the storage-chambel and the cooling-chamber, of api jeotor. arranged Jd y o Ja fiary, 9

Signed by meat New York, N. Y., this lqth' I I CLYDE-J. COLEMANQ 

